In 2017, Tillett represented the North Queensland Marlins women's team[2] and Indigenous All Stars women's team.[6] In 2018, she was named in the Australian women's national elite training squad for the upcoming NRLW competition.[7] Three weeks later she played for the Wests Panthers, before rupturing the ACL in her right knee during her first game.[3] In January 2020, she was a part of the Queensland Female Performance Program squad.[2] In 2021, she played for the North Queensland Gold Stars in the BHP Premiership.[8] In December 2021, she signed with the Newcastle Knights to be a part of their inaugural NRLW squad.[9]
In Round 4 of the 2023 NRL Women's season, after missing the first three rounds through injury, Tillett made her club debut for the Cowboys and set up two tries in their 16–12 win over the Wests Tigers.[14]